G - Physics – 01 – N
Patent
G - Physics
01
N
G01N 27/04 (2006.01) G08B 21/00 (2006.01) G08B 21/20 (2006.01) G01N 33/24 (2006.01)
Patent
CA 2219474
The invention consists of a portable instrument, of a very high accuracy, which measures the soil moisture and which can be calibrated (gauged) for the use in the most different conditions, in function of necessities. It is a multifunctional gauge of a compact construction very well adapted to the purpose it was conceived for. In order to measure the soil moisture, the gauge uses the proportionality between the soil humidity contents and its electric conductivity. The information is displayed by a series of LED-s. In contrast with the use of a needled pointer, this mode of displaying gives a great endurance to the gauge. When it is switched to the ~ALARM~ mode of functioning, the gauge detects any decrease of the soil moisture level under a preset threshold, depending on the type of plant signaling either optically or acoustically, at choice. The gauge uses a measuring probe of an original conception, made of conducting tracks specially conceived for this measurement.
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